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number of units purchased and sold throughout each accounting period but applies ts inventory costing method at the end of each month, as if it uses a periodic inventory system Assume January. Sales totaled 270 units Oahu Kiki's records show the following for the month of Date Units Unit Cost Total Cost Beginning Inventory January 1 140 $ 75 10,500 Purchase January 15 300 85 25,500 January 24 240 10525,200 Purchase